Microcontroller MCQ Questions

This section focuses on "Microcontroller" in Microprocessor. These Multiple Choice Questions (MCQ) should be practiced to improve the Microprocessor skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. What is true about microcontroller?

A. A microcontroller is a small and low-cost microcomputer
B. It is designed to perform the specific tasks of embedded systems
C. microcontroller consists of the processor, the memory, Serial ports, peripherals.
D. All of the above

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2. Which is false about microcontroller?

A. Microcontrollers are used to execute a single task within an application.
B. It consists of CPU, RAM, ROM, I/O ports.
C. Its power consumption is high because it has to control the entire system.
D. It is built with CMOS technology

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3. This type of microcontroller is generally used in automatically controlled appliances like automatic operational machines.

A. 8-bit microcontroller
B. 16-bit microcontroller
C. 32-bit microcontroller
D. 64-bit microcontroller

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4. This type of microcontroller is designed in such a way that they do not have a program memory on the chip.

A. External memory microcontroller
B. Embedded memory microcontroller

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5. Which of the following is an example of Embedded memory microcontroller?

A. Intel 8031 microcontroller
B. Intel 8051 microcontroller.
C. Intel 8081 microcontroller.
D. Intel 8085 microcontroller.

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6. 8051 microcontroller is designed by Intel in?

A. 1980
B. 1981
C. 1982
D. 1983

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7. At what PIN number, there is a RESET pin, which is used to reset the microcontroller to its initial values?

A. PIN 9
B. PIN 20
C. PIN 30
D. PIN 35

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8. At what PIN number, there is EA pin which stands for External Access input?

A. PIN 28
B. PIN 29
C. PIN 30
D. PIN 31

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9. When pins are configured as an output (i.e. logic 0), then the single port pins can receive a current of?

A. 5mA
B. 8mA
C. 15mA
D. 10mA

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10. Which IO Port can be used for higher address byte with addresses A8-A15?


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